if (document.images) {
  Homeon = new Image(); Homeon.src = "images/glxo_on_02.jpg"; Homeoff = new Image(); Homeoff.src = "images/glxo_02.jpg";
  Venueon = new Image(); Venueon.src = "images/glxtnv_on_02.jpg"; Venueoff = new Image(); Venueoff.src = "images/glxtnv_02.jpg";
  Registon = new Image(); Registon.src = "images/glxtnv_on_03.jpg"; Registoff = new Image(); Registoff.src = "images/glxtnv_03.jpg";
  Abstractson = new Image(); Abstractson.src = "images/Abstracts_on.jpg"; Abstractsoff = new Image(); Abstractsoff.src = "images/Abstracts.jpg";
  Proceedingson = new Image(); Proceedingson.src = "images/Proceedings_on.jpg"; Proceedingsoff = new Image(); Proceedingsoff.src = "images/Proceedings.jpg";
  SciProgon = new Image(); SciProgon.src = "images/glxtnv_on_04.jpg"; SciProgoff = new Image(); SciProgoff.src = "images/glxtnv_04.jpg";
  Contacton = new Image(); Contacton.src = "images/glxtnv_on_05.jpg"; Contactoff = new Image(); Contactoff.src = "images/glxtnv_05.jpg";

  Participon = new Image(); Participon.src = "images/glxbnv_on_03.jpg"; Participoff = new Image(); Participoff.src = "images/glxbnv_03.jpg";
  SciRatioon = new Image(); SciRatioon.src = "images/glxbnv_on_02.jpg"; SciRatiooff = new Image(); SciRatiooff.src = "images/glxbnv_02.jpg";
  Posteron = new Image(); Posteron.src = "images/glxbnv_on_04.jpg"; Posteroff = new Image(); Posteroff.src = "images/glxbnv_04.jpg";
  Accomon = new Image(); Accomon.src = "images/glxbnv_on_05.jpg"; Accomoff = new Image(); Accomoff.src = "images/glxbnv_05.jpg";
  SocProgon = new Image(); SocProgon.src = "images/glxbnv_on_06.jpg"; SocProgoff = new Image(); SocProgoff.src = "images/glxbnv_06.jpg";
  Sponsoron = new Image(); Sponsoron.src = "images/glxbnv_on_07.jpg"; Sponsoroff = new Image(); Sponsoroff.src = "images/glxbnv_07.jpg";
  Correson = new Image(); Correson.src = "images/glxbnv_on_08.jpg"; Corresoff = new Image(); Corresoff.src = "images/glxbnv_08.jpg";
} 
function changeImages() {
  if (document.images) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = eval(changeImages.arguments[i+1] + ".src");
    }
  }
}
function NewWindow(mypage, myname, w, h, scroll) {
var winleft = (screen.width - w) / 2.7;
winprops = 'height='+h+',width='+w+',top='+0.0+',left='+winleft+',scrollbars='+scroll+',resizable,toolbar=yes,location=yes,directories=yes,status=yes,menubar=yes'
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}
function clearField(object) {
object.value ="";
}